[Morphokinetics of lymph node structures in subextreme and extreme conditions]

Morphodynamics of the rat popliteal lymph node structures has a variously directed character in Siberia and Antarctic. Reorganization of the lymph node in Siberia is accompanied with increase of the medulla and in Antarctic--of the cortex. The dynamics of certain constructive changes in the node depends on circulation of lymphocytes. They migrate along the vector of the direction and determine the type of the lymph node and its functional state depending on condition of the environment.